Issue for tracking future of IKVM8
There are some updates to it happening at: https://github.com/wwrd/ikvm8. In particular, there has been some progress on getting IKVM to work with .NET Standard: windward-studios/ikvm8#3. You might consider targeting IKVM.WINDWARD instead of IKVM so when these changes are complete this project will support .NET Standard (we will need this for OpenNLP).
Thanks @NightOwl888 for pointing it out
Issue for tracking future of IKVM8
Thanks @NightOwl888 for pointing it out